JEEP CJ 1953 Service Manual

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

J
flat washer, lock washer and nut.

q.
Check
the
complete
transmission for operation.

r.
Install
transmission case cover.

J-15.
T14A
TRANSMISSION
The
T14A is a three
speed
fully synchronized (all

forward
gears) transmission with helical drive gears
throughout.

The
main drive gear is supported by a
ball
bearing at the front end of the transmission case and is
piloted at its front end in an oil impregnated bush­
ing mounted in the crankshaft.

The
front end of the mainshaft is piloted in a row
of
roller
bearings set
into
the hollow end of the main

drive
gear and the
rear
end is
carried
by a
ball

bearing
mounted in the
rear
transmission case.
The
counter gear is
carried
on a single row of

rollers
at both ends. The reverse idler gear is
carried

on a single row of rollers in the center.
Thrust
is

taken
on thrust washers located
between
the
ends

of the counter and reverse idler gear and the thrust
bosses
in the case.

The
three forward gears (low, second, third) are

fully
synchronized. The synchronizer assemblies
consist of
clutch
hubs, clutch
sleeves,
clutch springs,

and
three synchronizer plates and are retained on
the mainshaft by a
select
fit snap
ring.
The
shift is manual through a cane shift lever and
interlock
assembly to the
rearward
shift fork
operating low and reverse gear and to the forward
shift fork operating second and
third
gear.
J-16.
TRANSMISSION
DISASSEMBLY
—
T14A

Refer
to Fig. J-13.

a.
If the transfer case is attached, separate it from
the transmission by removing the five capscrews
and
lockwashers.

b.
Remove cane shift housing cover and gasket

from
top of transmission case. The shift housing
cover can be disassembled if necessary, at this
point, by removing the shift
rails,
poppet
balls,

springs,
and shift forks. Refer to Fig. J-14.

c.
Remove nut and flat washer securing transfer case drive gear on the mainshaft. Remove transfer case drive gear, adapter, and spacer. Refer to

Fig.
J-15.
FIG.
J-15—TRANSFER
CASE
DRIVE

GEAR
ASSEMBLY
1—
Bearing
Adapter

2—
Bearing
Spacer

3—
Transfer
Case
Drive
Gear
4—
Flat
Washer 5— Nut
12885

FIG.
J-16—REMOVING
MAIN
DRIVE
GEAR
BEARING
1—W-329 Puller

d.
Remove main drive gear bearing retainer and
gasket. e. Remove main drive gear and mainshaft bearing snap rings.
f. Remove the main drive gear and mainshaft
bearings using bearing puller set W-329. Refer to

Figs.
J-16 and J-l7.
FIG.
J-17—REMOVING
MAINSHAFT
BEARING

1—W-329
Puller g. Remove main drive gear from transmission case.

h.
Remove mainshaft and gears as an assembly,
through the case cover opening as shown in Fig.

J-18.

i.
Remove the lockplate by tapping lightly on the
front end of the countershaft and reverse idler
shaft. Remove lockplate from
slots
in shafts. Refer
to
Fig.
J-19.

j.
Using Tool W-335, drive the countershaft
rear­

ward,
out of the case, as shown in Fig. J-20. The countershaft gear assembly
will
drop to the
bottom

of the case. Using Tool W-335
will
ensure that the

roller
bearings
will
remain in the countershaft gear
hub and may be removed as an assembly. 251

J

THREE-SPEED
TRANSMISSION

12866

FIG.
J-l8—REMOVING-INSTALLING MAINSHAFT GEAR ASSEMBLY

1285S

FIG.
J-19—REMOVING-INSTALLING
LOCKPLATE
1— Reverse
Idler
Shaft 2—
Lockplate

3—
Countershaft

12884

FIG.
J-20—REMOVING-INSTALLING COUNTERSHAFT
1—Arbor
Tool W-335
2
—Counter
gear
3—Countershaft 252
FIG.
J-21—REMOVING-INSTALLING

REVERSE
IDLER
GEAR

1—
Washer

2—Arbor
Tool W-336

3—
Reverse
Idler
Gear
4— Reverse
Idler
Shaft k. Remove the countershaft gear assembly and the
two thrust washers. Remove spacer washers, bear­ ing rollers, and spacer from the countergear hub
assembly for inspection.

I.
Using Tool W-336 drive the reverse idler shaft

rearward,
out of the case. Remove reverse idler
gear, washers, and roller hearings as an assembly.

Refer
to Fig. J-21.

m.
Remove the clutch hub snap ring and the
second-third synchronizer assembly from the main-
shaft. Refer to Fig. j-22.
V

^^r"***
12852
FIG.
J-22—REMOVING-INSTALLING SECOND-
THIRD
CLUTCH
HUB
SNAP
RING

1—
Second-Third
Synchronizer Assembly 2— Snap
Ring

3—
Mainshaft
n.
Remove second
speed
gear from mainshaft.

o.
Remove reverse gear from mainshaft.
p.
Remove the clutch hub snap ring, and the low
synchronizer assembly from the mainshaft. Refer
to Fig. J-23.
q. Remove low
speed
gear from mainshaft.
r.
This
completes
the transmission disassembly.

'Jeep'
UNIVERSAL SERIES
SERVICE
MANUAL

FIG.
J-23—REMOVING-INSTALLING LOW
CLUTCH
HUB
SNAP
RING 1— Mainshaft
2— Snap
Ring

3—
Snap
Ring
Groove 4—
Low
Synchronizer Assembly

J-17. DISASSEMBLY SYNCHRONIZER
ASSEMBLIES

Important:
Should a synchronizer assembly
(either low-and-reverse or second-and-high) be re­
placed for any reason on a cane shift transmission,
the shift fork that operates the synchronizer being
replaced must have an identifying letter "A" ap­ pearing just under the shaft
hole
on the side

opposite
the pin. If the letter "A"
does
not appear
on the existing fork, it must be replaced with a fork that has a letter "A" appearing thereon.
FIG.
J-24—SECOND-THIRD SYNCHRONIZER
ASSEMBLY
Refer
to Fig. J-24.

Second-Third
Synchronizer Unit.

a.
Remove springs (one on each side of unit). b.
Mark
sleeve
and hub
before
separating to en­
sure proper installation at time of assembly.
c. Remove hub from
sleeve.

d.
Remove the three synchronizer plates from third

speed
side of the hub. e.
Clean
and inspect synchronizer assembly parts.
f. Assemble synchronizer in reverse order of dis­ assembly, making certain the two synchronizer

spring
openings
are installed 120° of each other,
with spring tension
opposed.

Low
Synchronizer Unit.

Refer
tc- Fig. J-25.
The
low synchronizer assembly is serviced in the
same manner as second-third with exception of one
synchronizer spring.
12853

FIG.
J-25- -LOW SYNCHRONIZER
ASSEMBLY
1—
Synchronizer
Spring (2)
2—
Clutch
Hub

3—
Clutch
Sleeve
4— Shifter Plate
1
—Clutch
Hub
2— Shifter Plate

3—
Synchronizer
Spring (1)
4—
Clutch
Sleeve

J-18.
TRANSMISSION
CLEANING
AND
INSPECTION

Refer
to Fig. J-13.

a.
Wash transmission case inside and
outside
with cleaning solvent.
b.
Check
bearing and shaft bores. Inspect the case
for
cracks.
Check
the front and
rear
faces
and dress off any burrs with a fine
mill
file. If cracks are
found and bores are not ture, replace the case.
c.
Clean
and inspect all gears and bronze blocking
rings for
cracks,
chipped or cracked
teeth,
or ex­ cessive wear of the
teeth.

Note:
Whenever any transmission gear requires
replacement, the gear with which it
meshes
should
also be replaced.

d.
Inspect all bearings or bushings for wear or damage.
e.
Check
the second-third, and low synchronizer clutch
sleeves
making certain
they
slide freely on the clutch hub. 253

J

THREE-SPEED TRANSMISSION
J-19.
TRANSMISSION
REASSEMBLY
—

T14A

Note; Lubricate all internal transmission
parts

before
assembly
using the proper lubricant.
a. Position
reverse
idler
gear
with
Arbor
Tool

W-336,
roller bearings, and thrust
washers
in the
case.
Install
reverse
idler shaft forcing out
Tool

W-336.
Make certain the slot end of the idler shaft
is correctly aligned to receive the lockplate. Refer
to Fig. J-19.
FIG.
J-26—COUNTERSHAFT GEAR
BEARING ARBOR
1—
Roller
Bearings 2— Spacer
3—
Arbor
Tool W-335
b.
Assemble the
countergear
center
spacer,
four
bearing
spacers,
and countershaft bearing rollers

in
the countershaft
gear
hub
assembly
as
follows,
using Arbor
Tool
W-335.
Place
the
center
spacer

inside the hub and insert Arbor
Tool
in the
spacer.

Place
a bearing
spacer
at
each
end of the
center
spacer
and load a set of bearing rollers, and
place

a bearing
spacer
at
each
end to complete the as­
sembly. Refer to Fig. J-26 and J-27.

c.
Install large
countergear
thrust
washer
in the

front
of the
case.
Position small thrust
washer
on
the countershaft
gear
hub
with
lip facing groove in
the
case.
Holding the countershaft
gear
assembly
in
position, start the countershaft in the
rear
of the

case
with
the lockplate slot toward the
rear
and the
slot in alignment
with
the slot in the
reverse
idler
FIG.
J-27—COUNTERSHAFT BEARINGS
AND SPACERS INSTALLED
1— Countershaft
Gear
2— Countershaft Bearing Rollera
3— Countershaft

4—
Spacers
5
—Center Spacer
FIG.
J-28—LOCKPLATE INSTALLATION
1— Reverse Idler Shaft 2—
Lockplate

3— Countershaft
gear
shaft.
Press
shaft through the
gear
hub as­
sembly and into the front of the
case
forcing out

Tool
W-335.

d.
Locate the lockplate in the slots of the
reverse

idler
shaft and countershaft. Tap the two
shafts
alternately
until
lockplate is tight
against
case.

Refer to Fig. J-28.
e. When assembling the mainshaft,
first
install mainshaft low
gear
and bronze blocking
ring.
In­

stall
the low synchronizer
assembly,
then install
the
select
fit
snap
ring.
Refer to Fig. J-23.
Note; Mainshaft
snap
rings are
select
fit to
eli­

minate clutch hub and main drive
gear
bearing
end play. Make certain correct
snap
ring
is installed at
assembly.

f.
Install the mainshaft
second
gear
and bronze

blocking
ring.
Install the second-third synchronizer
assemblv,
then install
select
fit
snap
ring.
See
Fig.
J-22.

g.
Install
reverse
gear
on mainshaft.

h.
Install the mainshaft and
gear
assembly
as a

unit,
through the top cover opening of the trans­
mission
case.
Refer to Fig. J-18.

i.
Install bronze blocking
ring
onto the
second-

third
synchronizer
assembly.

j.
Install main drive
gear
roller
bearings
using low
melting
point
grease
to hold them in place. Refer
to Fig. J-29.
k. Install the main drive
gear
and oil retainer

washer
(slinger) into the
case
with
the cutaway
portion
of the
gear
positioned downward toward
the
countergear
assembly.
Guide main drive
gear
onto the mainshaft using
care
not to drop the roller bearings, as shown in Fig. J-30. 254

'Jeep*
UNIVERSAL SERIES SERVICE
MANUAL

J

FIG.
J-29—MAIN
DRIVE GEAR

ROLLER
BEARINGS INSTALLED
1—
Roller
Bearings 2— Cutaway
Main
Drive
Gear
I.
Install main drive gear and mainshaft bearings
using bearing installer set W-331
together
with a
thrust yoke Tool W-334 to prevent
damage
to the
synchronizer clutch. Install thrust yoke Tool.W-334
into
the
second
speed
gear
groove
and
between
the
main drive gear
(steel)
clutch
teeth
and bronze
synchronizer ring. Use
both
bearing drivers (W-331, SP-5364) and a backup block when driving
bearings
into
position, as shown in Figs. J-31 and J-32.
m. Install main drive gear and mainshaft bearing
snap rings.

Note:
The mainshaft bearing snap ring is .010"
[0,254
mm.] thicker than the main drive gear bear-
12882

FIG.
J-31—INSTALLING
MAIN
DRIVE GEAR BEARING

1—
Tool
SP-5364 Short Driver 2—
Tool
W-334 Thrust Yoke
3—
Tool
W-331 Long Driver 4— Wood Block

FIG.
J-32—INSTALLING
MAINSF
BEARING
1— Wood Block
2—
Tool
W-331 Long Driver
3—
Tool
W-334 Thrust Yok -
4—
Tool
SP-5364 Short T

FIG.
J-30—INSTALLING
MAIN
DRIVE GEAR ASSEMBLY
1—
Oil
Retainer Washer (Slinger)
2—
Main
Drive
Gear

3— Mainshaft
FIG.
J-33—MAIN
DRIVE GEAR BEARING
RETAINER
OIL
SEAL
255

THREE-SPEED
TRANSMISSION

ing
snap
ring.
Care should be taken to
install
the
proper
snap
ring
at
these
locations.

fl.
Install
the mainshaft rear bearing
adapter,

spacer,
transfer
case
drive
gear,
flat
washer, and

nut.
Torque nut 130 to 170
lb-ft.
[17,9 a 23,5
kg-m.].
Refer to Fig. J-15.
o. Check the main drive bearing retainer oil seal.
If
seal is
worn
or damaged it must be replaced.
Refer to Fig. J-33. 12858

FIG.
J-34—INSTALLING
MAIN
DRIVE GEAR BEARING RETAINER

-Gasket

-Bearing
Retainer
p.
Install
main drive
gear
bearing retainer gasket,
and retainer assembly. Make certain the oil drain

hole
slot in the retainer housing and gasket are

aligned.
Install
the three
ferry
type screws and
washers. Refer to Fig. J-34.
q.
Install
the transmission
case
cover gasket,
p.
Position the transmission
gear
train
and
shift

cover housing assembly in neutral. Enter the

shifter
forks
into
the
clutch
sleeves
and
align
cover,

case
and gasket holes.
Install
capscrews and
lock­

washers
and torque 8 to 15
lb-ft.
[1,1 a 2,1
kg-m.].
Refer to Figs. J-35 and J-36.

S.
This completes the transmission reassembly. 12857

FIG.
J-35—MAINSHAFT
GEAR TRAIN
—
NEUTRAL
1— Reverse Gear

2— Low
Synchronizer Assembly

3— Low
Gear
4— Second Gear
5—
Second-Third
Synchronizer Assembly
6—
Main
Drive
Gear

FIG.
J-36—INSTALLING CANE SHIFT
COVER
ASSEMBLY
1—
Control
Housing'
Cover•''

2—
Gasket
3—
Second-Third
Shift
Fork
4— Low-Reverse
Shift
Fork 256

'Jeep*
UNIVERSAL
SERIES
SERVICE
MANUAL

J J-20
TRANSMISSION
SERVICE
DIAGNOSIS

SYMPTOMS
PROBABLE
REMEDY

Lock
in Two
Gears
Replace
Poppet
or Shift Levers

Slips
Out of High Gear Transmission Misaligned with Bellhousing

End
Play in Main Drive Gear Damaged Pilot Bearing or Front Bearing.

Slips
Out of Second
Worn
Gear Replace
Weak
Poppet
Spring Replace

Noise
in Low Gear
Gear
Teeth Worn Replace Gears
Shifting
Shoe
Bent Replace
Shoe
Lack
of Lubrication Drain and Refill

Grease
Leak into Bellhousing Gasket Broken Front Bearing Retainer Replace
Transmission Main Drive Gear Oil Seal Replace Align Transmission Case to Bellhousing
and Bellhousing to Engine
Tighten Front Retainer
Replace
J-21.
TRANSMISSION
SPECIFICATIONS

HURRICANE
F4
ENGINE
3-SPEED

Vehicle:
CJ-3B,
CJ-5,
CJ-5A,

CJ-6,
CJ-6A
DJ-5,
DJ-6
Make
Type

Speeds

Ratios: —
First
Second

Third

Fourth
Warner

T90C

Synchronous Mesh
3 Forward — 1 Reverse
3.339
to 1 1.551 to 1 1.000 to 1
Warner

T96

Synchronous Mesh
3 Forward — 1 Reverse
2.605
to 1 1.630 to 1
1.000 to 1
Reverse
Interlock
Poppet
Clearance. . .
3.798
to 1

3.536
to 1
.001" to .007"

[0,025
a 0,178 mmJ

DAUNTLESS
V-6
ENGINE
3-SPEED

Vehicle:
CJ-5,
CJ-6,
CJ-5A,
CJ-6A

DJ-5,
DJ-6
Late
CJ-5, CJ-6
Make
Warner
Warner Warner

Model
AS7
T86AA

AS9
T86AA
T14A

Type..
Synchromesh
Synchromesh Synchromesh

Speeds
3 Forward — 1 Reverse 3 Forward — 1 Reverse 3 Forward — 1 Reverse
Ratios: —
First
2.798
to 1
2.798
to 1
3.100 to 1

Second
1.687 to 1 1.687 to 1 1.612 to 1

Third
1.000 to 1
1.000 to 1 1.000 to 1
Reverse
3.798
to 1
3.798
to 1 3.100 to 1 257

'Jeep'
UNIVERSAL
SERIES
SERVICE
MANUAL

Jl
FOUR-SPEED
TRANSMISSION

Contents

SUBJECT
PAF.

GENERAL.
Jl-1

FOUR-SPEED
TRANSMISSION
REMOVAL.
Jl-2
Four-Speed Transmission
Disassembly
.
Jl-3 Four-Speed Transmission Control Housing
Disassembly
Jl-4
Four-Speed Transmission Reassembly Jl-5
SUBJECT
PAR.
Four-Speed Transmission Control Housing
Reasse mbly Jl-6

Transfer
Case Adapter Plate Oil Seal .
.
Jl-8
Four-Speed Transmission Installation Jl-7

FOUR-SPEED
TRANSMISSION
SPECIFICATIONS.
.
.
Jl-10

SERVICE
DIAGNOSIS
Jl-9 10771

FIG.
Jl-1—FOUR-SPEED
TRANSMISSION

1—
Control
Housing Gasket
2—
Control
Housing Assembly
3— Mainshaft Assembly
4—
Thrust
Washer
5—
Thrust
Washer
6— Reverse Shifting
Shoe
7— Reverse Shifting Arm
8—
C-Washer

9— Reverse Shifting Arm Pivot
10—
O-Ring

11— Reverse Idler
Gear
Assembly
12— Snap Ring
13—
Thrust
Washer
14—
Sleeve

15— Bearing Rollers
16— Spacer
17— Reverse Idler
Gear

18— Pipe Plug
19— Countershaft Gears 20— Bearing Rollers
21— Spacer 22— Spacer
23—
Thrust
Washer

2
4
—Bellhousi ng-to-Transmission Adapter Plate
25— Bearing Retainer
26— Bearing Retainer Bolt
27— Bearing Retainer Lockwasher
28— Bearing Retainer Gasket
29—
Main
Drive
Gear

30— Bearing Rollers 31— Transmission Case
32— Adapter Plate Lockwasher
33— Adapter Plate Capscrew
34— Side Opening Cover Gasket
35— Side Opening Cover Bolt
36— Side Opening Cover Lockwasher
37— Side Opening Cover 38— Countershaft
39— Shifting Arm Pivot Taper Pin
40— Bearing
41— Snap Ring
42—
Oil
Seal 43— Spacer
44— Reverse-Idler
Gear
Shaft 45—
Lock
Plate
46—
Lock
Plate Lockwasher
47—
Lock
Plate Bolt
48— Gasket
49— Adapter Plate 50— Adapter Plate Lockwasher
51— Adapter Plate Bolt
52— Cotter Key
53— Nut 54— Washer
55— Gasket 259

Jl

FOUR-SPEED
TRANSMISSION
J1-1.
GENERAL

A
model T-98 four-speed transmission with a cane- type shift is optional on 'Jeep* Models CJ-5 and
CJ-6
equipped with the Hurricane F4
engine.
A model T-18 four-speed transmission is optional on
the 'Jeep* Model
CJ-5
equipped with the Dauntless
V6
engine.
These transmissions provide four
speeds

forward
and one reverse with synchromesh
engage­
ment in second,
third,
and fourth speed.

For
quick identification, the optional
4-speed
transmission is 11%"
[30,16
cm.] long whereas the

standard
3-speed
transmission is 8"
[20,32
cm.] long. However the instructions for removal and
installation of the two transmissions are the same.

J1-2.
Four-Speed
Transmission Removal Use the procedure outlined under the heading,
"TRANSMISSION
REMOVAL"
Section J Par.

J-6.
FIG.
Jl-2—FOUR-SPEED TRANSMISSION MAIN DRIVE
GEAR

1—
Snap
Ring
3—Bearing 5—Main
Drive
Gear

2—
Snap
Ring
4—Washer 6—Bearing Rollers

FIG.
Jl-3—T-98
FOUR-SPEED TRANSMISSION MAIN SHAFT 1—
Blocking
Ring

2—
Direct
and
Third
Clutch
Sleeve

3—
Snap
Ring

4—
Spring

5—
Shifting
Plate
6—
Direct
and
Third
Clutch
Hub 7—
Third
Speed
Gear
Assembly
8—
Snap
Ring
9—Thrust
Washer
10—
Bearing
Rollers

11—
Second Speed
Gear

12—
Spacer
13—
Mainshaft

14—
Blocking
Ring

15—
Shifting
Plate
16— Poppet
Spring
17—
Ball

18—
Low
and Second
Clutch
Hub 19—
Retaining
Ring

20—
Low
and Second Speed
Gear
21—
Second Speed
Synchronizer
Assembly
22—
Direct
and
Third
Synchroniser Assembly 260